Pretty good guess: when Republicans take over.
Remember, Democrats & Media (but I repeat myself) have fully anaesthetized themselves to whatever is wrong today.
The very millisecond Republicans take charge, every Democrat will suddenly remember every ache & pain they've ever felt, and blame it on Republicans.
The cacophony will be so loud that panic will set in, and collapse soon follow.
Dems will then use the "Republican collapse" to get themselves reelected.
Question: how smart do you have to be, to figure this all out?
Not only that, but the market does not do as well under GOP leadership, for whatever reasons.